MIDDLETON BOATWORKS, INC HIN Decoder
Hull Identification Numbers beginning with GZP were assigned by the US Coast Guard to MIDDLETON BOATWORKS, INC of CAMDEN, ME. The builder is listed in the USCG MIC database. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
GZP
Location
CAMDEN, ME
In business
since 2005
Status
Listed active in USCG records
MIDDLETON BOATWORKS, INC hulls (2005–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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MIDDLETON BOATWORKS, INC HIN FAQ
What does a MIDDLETON BOATWORKS, INC HIN look like?
It starts with the three characters "GZP" — the Manufacturer Identification Code the US Coast Guard assigned to MIDDLETON BOATWORKS, INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MIDDLETON BOATWORKS, INC hulls (2005–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is MIDDLETON BOATWORKS, INC still in business?
USCG records list MIDDLETON BOATWORKS, INC of CAMDEN, ME in the MIC database (registered 2005).
How do I decode the year on a MIDDLETON BOATWORKS, INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MIDDLETON BOATWORKS, INC hulls (2005–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in ME
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "MIDDLETON BOATWORKS, INC HIN Decoder," carwhere.com/hin-decoder/gzp, last verified 2026-06-12.